EP0743799A3 - Method and apparatus for correcting contour of color image signal - Google Patents

Method and apparatus for correcting contour of color image signal Download PDF

Info

Publication number
EP0743799A3
EP0743799A3 EP96106959A EP96106959A EP0743799A3 EP 0743799 A3 EP0743799 A3 EP 0743799A3 EP 96106959 A EP96106959 A EP 96106959A EP 96106959 A EP96106959 A EP 96106959A EP 0743799 A3 EP0743799 A3 EP 0743799A3
Authority
EP
European Patent Office
Prior art keywords
image signal
color image
correcting contour
contour
correcting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96106959A
Other languages
German (de)
French (fr)
Other versions
EP0743799B1 (en
EP0743799A2 (en
Inventor
Naoki Kashimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ikegami Tsushinki Co Ltd
Original Assignee
Ikegami Tsushinki Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ikegami Tsushinki Co Ltd filed Critical Ikegami Tsushinki Co Ltd
Publication of EP0743799A2 publication Critical patent/EP0743799A2/en
Publication of EP0743799A3 publication Critical patent/EP0743799A3/en
Application granted granted Critical
Publication of EP0743799B1 publication Critical patent/EP0743799B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/646—Circuits for processing colour signals for image enhancement, e.g. vertical detail restoration, cross-colour elimination, contour correction, chrominance trapping filters
EP96106959A 1995-05-16 1996-05-03 Method and apparatus for correcting contour of color image signal Expired - Lifetime EP0743799B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP117091/95 1995-05-16
JP7117091A JPH08317252A (en) 1995-05-16 1995-05-16 Method and device for outline correction
JP11709195 1995-05-16

Publications (3)

Publication Number Publication Date
EP0743799A2 EP0743799A2 (en) 1996-11-20
EP0743799A3 true EP0743799A3 (en) 1997-05-02
EP0743799B1 EP0743799B1 (en) 2001-10-04

Family

ID=14703180

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96106959A Expired - Lifetime EP0743799B1 (en) 1995-05-16 1996-05-03 Method and apparatus for correcting contour of color image signal

Country Status (4)

Country Link
US (1) US5731845A (en)
EP (1) EP0743799B1 (en)
JP (1) JPH08317252A (en)
DE (1) DE69615608T2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1146313A (en) * 1997-07-25 1999-02-16 Fujitsu General Ltd Contour emphasis circuit
JP3743235B2 (en) * 1999-10-30 2006-02-08 株式会社富士通ゼネラル Outline enhancement method and circuit
JP4325388B2 (en) * 2003-12-12 2009-09-02 ソニー株式会社 Signal processing apparatus, image display apparatus, and signal processing method
US8107012B2 (en) * 2004-11-29 2012-01-31 Panasonic Corporation Image process apparatus and method for contour correction
CN115631112B (en) * 2022-11-18 2023-03-14 北京飞渡科技有限公司 Building contour correction method and device based on deep learning

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2151104A (en) * 1983-11-10 1985-07-10 Dainippon Screen Mfg Facsimile system
US4677461A (en) * 1984-07-26 1987-06-30 Mitsubishi Denki Kabushiki Kaisha Contour detecting filter
EP0530918A2 (en) * 1991-09-02 1993-03-10 Koninklijke Philips Electronics N.V. Motion adaptive picture signal processing
JPH05103226A (en) * 1991-10-08 1993-04-23 Matsushita Electric Ind Co Ltd Contour smoothing circuit
JPH05328171A (en) * 1992-05-26 1993-12-10 Victor Co Of Japan Ltd Contour emphasis circuit for picture signal

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5642483A (en) * 1979-09-17 1981-04-20 Sony Corp Luminance signal processing circuit for cross color suppression
JPS61140280A (en) * 1984-12-12 1986-06-27 Hitachi Ltd Profile compensating circuit
JPS627292A (en) * 1985-07-03 1987-01-14 Mitsubishi Electric Corp Pal adaptive type contour extracting filter
JPS627291A (en) * 1985-07-03 1987-01-14 Mitsubishi Electric Corp Pal adaptive type contour extracting filter
JPH0824347B2 (en) * 1986-05-12 1996-03-06 松下電器産業株式会社 Contour corrector for color television camera
JPH02285779A (en) * 1989-04-26 1990-11-26 Matsushita Electric Ind Co Ltd Contour correction device
JP2773900B2 (en) * 1989-06-07 1998-07-09 池上通信機 株式会社 Video processing device for NTSC color television camera
JP3202983B2 (en) * 1989-11-21 2001-08-27 ソニー株式会社 Signal processing circuit of solid-state imaging device
JP2785213B2 (en) * 1989-11-24 1998-08-13 ソニー株式会社 Signal processing circuit of solid-state imaging device
JPH03263977A (en) * 1989-11-27 1991-11-25 Hitachi Ltd Television receiver
JP3038738B2 (en) * 1989-11-30 2000-05-08 ソニー株式会社 Signal processing circuit of solid-state imaging device
JPH03289877A (en) * 1990-04-06 1991-12-19 Sharp Corp Contour correction circuit
JPH04100487A (en) * 1990-08-20 1992-04-02 Ikegami Tsushinki Co Ltd Contour correcting method
JPH04126470A (en) * 1990-09-18 1992-04-27 Toshiba Corp Contour emphasis circuit
JPH04172096A (en) * 1990-11-05 1992-06-19 Matsushita Electric Ind Co Ltd Three-line median comb line filter for both pal/ntsc
JPH04310092A (en) * 1991-04-09 1992-11-02 Ikegami Tsushinki Co Ltd Color television video signal processing unit
JP3303308B2 (en) * 1991-08-29 2002-07-22 ソニー株式会社 Video signal processing device
KR950001577B1 (en) * 1992-02-21 1995-02-25 삼성전자주식회사 Luma/chroma separation and image contour compensation circuit
JP3299810B2 (en) * 1993-04-28 2002-07-08 三菱電機株式会社 Luminance signal color signal separation filter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2151104A (en) * 1983-11-10 1985-07-10 Dainippon Screen Mfg Facsimile system
US4677461A (en) * 1984-07-26 1987-06-30 Mitsubishi Denki Kabushiki Kaisha Contour detecting filter
EP0530918A2 (en) * 1991-09-02 1993-03-10 Koninklijke Philips Electronics N.V. Motion adaptive picture signal processing
JPH05103226A (en) * 1991-10-08 1993-04-23 Matsushita Electric Ind Co Ltd Contour smoothing circuit
JPH05328171A (en) * 1992-05-26 1993-12-10 Victor Co Of Japan Ltd Contour emphasis circuit for picture signal

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 017, no. 460 (E - 1419) 23 August 1993 (1993-08-23) *
PATENT ABSTRACTS OF JAPAN vol. 018, no. 152 (E - 1523) 14 March 1994 (1994-03-14) *

Also Published As

Publication number Publication date
DE69615608T2 (en) 2002-04-18
JPH08317252A (en) 1996-11-29
EP0743799B1 (en) 2001-10-04
US5731845A (en) 1998-03-24
DE69615608D1 (en) 2001-11-08
EP0743799A2 (en) 1996-11-20

Similar Documents

Publication Publication Date Title
GB2305833B (en) Image processing apparatus for correcting color space coordinates and method
AU6595496A (en) Method and apparatus for image contrast quality evaluation
GB9506954D0 (en) Method and apparatus for image enhancement
GB9616102D0 (en) Apparatus and method for image synthesizing
AU3213095A (en) Feature guided method and apparatus for obtaining an image of an object
PL323631A1 (en) Method of and apparatus for eliminating effects of colour sync pulse modification on video signal
EP0693738A3 (en) Method and apparatus for generating color image mask
EP0540341A3 (en) Apparatus for and method of forming image
IL122644A0 (en) Method and apparatus for correction of colour cast in a digital image
EP0753828A3 (en) Interpolating operation method and apparatus for image signals
EP0593989A3 (en) Method of and apparatus for forming halftone images
GB9616015D0 (en) Apparatus and method for image synthesizing
HK1011815A1 (en) Image forming apparatus and method used therefor
EP0731599A3 (en) Image processing apparatus and method therefor
EP0731597A3 (en) Method and apparatus for generating halftone image
GB2296838B (en) Accent color image forming method and apparatus
GB2306916B (en) Printing apparatus and method of printing
EP0705024A3 (en) Method of generating color separation images and apparatus for the same
GB2277220B (en) An apparatus for and method of image processing
IL119221A0 (en) Apparatus and method for retouching a digital representation of a color image
EP0732672A3 (en) Thre-dimensional image processing method and apparatus therefor
AU5609994A (en) Apparatus and method for enhancing color images
AU5988496A (en) Image enhancement method and apparatus
EP0758179A3 (en) Interpolating operation method and apparatus for image signals
HK1012061A1 (en) Image forming apparatus and image forming method

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB

17P Request for examination filed

Effective date: 19970602

17Q First examination report despatched

Effective date: 19990707

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REF Corresponds to:

Ref document number: 69615608

Country of ref document: DE

Date of ref document: 20011108

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20100129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090602

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20080429

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20150529

Year of fee payment: 20

Ref country code: DE

Payment date: 20150528

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 69615608

Country of ref document: DE

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20160502

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20160502